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squish
Feb 15, 2017 3:35:26 GMT 1
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Post by plumma on Feb 15, 2017 3:35:26 GMT 1
Which head is fitted, I am assuming your probably running 21cc domes, either way that squish is too small on a 421, and with the pistons being cast ones, you also need to factor in piston rock otherwise you will smash pistons, normally on the inlet side. Your head will have removable domes, so you can easily machine them to give the squish you need. I recommend running 1.2mm for road use and thus far on mine I've covered nearly 1000 miles since setting mine at 1.2mm with no issues HTH That would be great!
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squish
Feb 15, 2017 3:33:16 GMT 1
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Post by plumma on Feb 15, 2017 3:33:16 GMT 1
I purchased the bike/engine as a project, bike is a ypvs frame, rgv front and rear with R6 sub frame and tank. Engine is a 421 with Athena top. Engine has never been started and I was unimpressed with Athena head, no thermostat and different water outlet so I decided to purchase a wicked motorsport torque head. It had 21cc domes and have no idea of comp ratio. Electrical system is a mix of lc loom and ypvs stator and cdi.
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squish
Feb 14, 2017 3:55:53 GMT 1
via mobile
Post by plumma on Feb 14, 2017 3:55:53 GMT 1
Base gasket is the go then
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squish
Feb 13, 2017 6:54:24 GMT 1
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Post by plumma on Feb 13, 2017 6:54:24 GMT 1
New domes are in order
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squish
Feb 12, 2017 11:22:04 GMT 1
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Post by plumma on Feb 12, 2017 11:22:04 GMT 1
I have a 421cc with a o-ringed head and I measured the squish today and it was at 0.72mm or about 29 thou. Wondering what people think?
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Post by plumma on Feb 11, 2017 23:42:27 GMT 1
X2
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Post by plumma on Feb 9, 2017 3:41:20 GMT 1
Good to know other people's experiences!
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Post by plumma on Feb 8, 2017 4:36:21 GMT 1
I was hoping someone could shed some light on this as I am in the same boat.
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Post by plumma on Feb 4, 2017 11:22:15 GMT 1
Keep up the good work!
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Post by plumma on Feb 4, 2017 8:37:18 GMT 1
Probably plenty of people like me, have a read and look at what people are doing but don't post, but still interested, and gives me motivation for my r6/rgv/rz hybrid!! (Ant's bike)
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Post by plumma on Dec 31, 2016 9:42:47 GMT 1
I've got an early R6 tank and sub frame on mine
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Post by plumma on Dec 31, 2016 9:25:33 GMT 1
I like how they hit it with the hose and then take photos to make the rubber and plastic look new! 'Be quick there not going to last' said no one. dickhead.
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Post by plumma on Jul 20, 2016 9:52:17 GMT 1
Must be something in the water!!
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Post by plumma on Jun 20, 2016 5:26:00 GMT 1
Yes true inspiration
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Post by plumma on May 27, 2016 3:39:54 GMT 1
31k for me too!!
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Post by plumma on May 10, 2016 3:33:39 GMT 1
I think it's a great project, but one thing that catches my eye is the changes in coolant design flow and being able to achieve consists flow throughout engine, for instance blocking of the left hand thermostat housing could cause issues maybe?? But love it, keep up the good work.
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Post by plumma on Apr 25, 2016 11:44:11 GMT 1
Mighty Mic, the man had to be carried to his bike and custom levers on the bars for brakes and gears as his legs were knackered and rode a two stroke, not a predictable 4 stroke and murdered them. The man is a LEGEND.
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Post by plumma on Apr 21, 2016 7:30:59 GMT 1
That's nuts, almost need a knobby tyre so you can over take on the grass
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Post by plumma on Apr 21, 2016 7:23:32 GMT 1
Ring-a-ding ding
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Post by plumma on Apr 11, 2016 6:30:23 GMT 1
Not what I wanted to hear but thankyou for input and clearing it up for me
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Post by plumma on Apr 10, 2016 8:53:18 GMT 1
On the lc history page it's says that a 31k rec/reg will not work with a F11 or an R stator. Is this only plug wiring or is electrical incompatibility
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Post by plumma on Apr 8, 2016 5:30:04 GMT 1
Where is the the lc history page?
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